Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Control system and control method of permanent magnet synchronous motor of series-connected cascade-type multi-level converter

A permanent magnet synchronous motor and drive control technology, which is applied to the speed/torque control of a single motor, and the conversion of irreversible DC power input to AC power output. The safety and comfort of energy electric vehicles can reduce the output harmonics and improve the quality of output power.

Inactive Publication Date: 2013-09-18
HARBIN INST OF TECH
View PDF0 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention is to solve the problem that the traction motor on the existing new energy electric vehicle has many output harmonics and the output power quality is low, which further affects the safety and comfort of the new energy electric vehicle, and proposes a series cascaded multi-level conversion Permanent magnet synchronous motor drive control system and its control method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Control system and control method of permanent magnet synchronous motor of series-connected cascade-type multi-level converter
  • Control system and control method of permanent magnet synchronous motor of series-connected cascade-type multi-level converter
  • Control system and control method of permanent magnet synchronous motor of series-connected cascade-type multi-level converter

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0026] Specific implementation mode one, see figure 1 Describe this embodiment, the permanent magnet synchronous motor drive control system of series cascaded multilevel converter described in this embodiment, it comprises driver 1, permanent magnet synchronous motor 3, signal conditioning circuit 4, DSP controller 5, Resolver 6, decoding circuit 7, man-machine interface 8, first current sensor P, second current sensor Q, DC power supply VCC, capacitor C0, resistor R1 and resistor R2,

[0027] The positive pole of the DC power supply VCC is simultaneously connected to one end of the capacitor C0, one end of the resistor R1 and the positive terminal of the DC input power supply of the driver 1, and the other end of the resistor R1 is simultaneously connected to one end of the resistor R2 and the bus voltage signal input of the DSP controller 5 The negative terminal of the DC power supply VCC is connected to the other terminal of the capacitor C1, the other terminal of the resis...

specific Embodiment approach 2

[0033] Specific Embodiment 2. This embodiment is further limited by the permanent magnet synchronous motor drive control system of the series cascaded multilevel converter described in the specific embodiment 1. The DSP controller 5 adopts a chip model of TMS320F2812 32 Bit DSP chip implementation.

specific Embodiment approach 3

[0034] Specific Embodiment Three. This embodiment is a further limitation of the permanent magnet synchronous motor drive control system of the series-cascaded multilevel converter described in the specific embodiment one. The model used in the decoding circuit 7 is AD2S90 or AD2S99 implementation of the decoding chip.

[0035] In this embodiment, AD2S90 is a dedicated chip produced by AD Company for digital processing of inductive synchronizer signals, which has the advantages of small size, simple structure, high reliability, easy debugging and outputting multiple signal modes.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a control system and a control method of a permanent magnet synchronous motor of a series-connected cascade-type multi-level converter and belongs to the field of power electronic control technology, and solves the problem that traction motors are huge in harmonic wave output and low in output power quality in the existing new energy electric cars, so that safety and comfortableness of new energy electric cars are affected. In the invention, traditional traction motor driver structure is abandoned, topology of the series-connected reaction type multi-level converter is provided, high-performance drive control of the motor can be realized and the problem of single direct-current power supply is solved, the control method is optimized, and more reasonable multi-level current wave form output design is provided according to different requirements of current harmonics to built-in permanent magnet synchronous motors in low speed, middle speed and high speed. The control system and the control method of the permanent magnet synchronous motor of the series-connected cascade-type multi-level converter are applicable to new energy automobiles which need high-efficiency and high-performance output, and single power to supply energy source.

Description

technical field [0001] The invention belongs to the technical field of power electronic control, and in particular relates to a drive control system of a permanent magnet synchronous motor of a cascaded multilevel converter. Background technique [0002] At present, the traditional cascaded multilevel converter (CHB, Cascaded H-bridge converter) is widely used in the drive control circuit of permanent magnet synchronous motors. Its advantage is that it can reduce the harmonics in the output voltage and obtain lower The du / dt can reduce the generated common mode voltage, reduce the axial pressure of the motor, increase the output power, reduce the switching frequency, and have modular and expandable functions and higher stability. However, the traditional cascaded multi-level converters mostly use several independent DC power supplies, which increases the cost, reduces the efficiency, and brings great difficulties to the design, especially in new energy electric vehicles / hybr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/08H02M7/49
CPCH02M7/49
Inventor 吴海波王晓明
Owner HARBIN INST OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com